Hi Aakash,
Please modify the MW_analogWriteDAC.cpp file by running the following command:
edit(fullfile(fileparts(codertarget.arduinobase.internal.getSpPkgRootDir),'arduinobase','src','MW_analogWriteDAC.cpp'))
This will opoen the MW_analogWriteDAC.cpp file in the MATLAB editor.
Replace the existing MW_DACWrite function with the following function:
extern "C" void MW_DACWrite(uint8_T channelFlag, uint32_T value)
{
#if defined(_ROTH_DUE_)
static int init_12bitDac = 0;
if(init_12bitDac==0){
analogWriteResolution(12); /* set the resolution of the Arduino analogWrite() function to 12 bits */
init_12bitDac = 1;
}
analogWrite(((channelFlag == 0)? DAC0 : DAC1), value);
#elif defined(_ROTH_MKR1000_) || defined(_ROTH_NANO33_IOT_)
/* dividing the data by 4 to adjust for upscaling by 4 in Arduino analogWrite API */
analogWrite(DAC0, (value>>2));
#elif defined(_ROTH_MKRZERO_) || defined(_ROTH_MKRWIFI1010_)
/* dividing the data by 4 to adjust for upscaling by 4 in Arduino analogWrite API */
analogWrite(15u, (value>>2));
#elif defined(_ROTH_ESP32_)
dacWrite(((channelFlag == 1)? DAC1 : DAC2), value);
#endif
}
This will change the resolution of DAC to 12 bit on Arduino due board. Please note that this change will only work for Arduino due. Other arduino boards are not affected by this change.
Hope this helps!
Thanks,
Arun
